<template>
  <div>
    <h1>我是didi</h1>
    {{count}}
  </div>
</template>

<script>
export default {
name:'Didi',
data(){
    return{
        count:0
    }
},
mounted(){
    this.$bus.$on('count',(count)=>{
        this.count=count
    })
}
}
</script>

<style>

</style>